Toto Washlet KS6

Toto / Electric Bidet Seat

Toto Washlet KS6

Model SW3946#01

  • Warm wateryes
  • Needs an outletyes
  • Heated seatyes

TOTO's home-center exclusive, replacing the discontinued K300 in the 2025 lineup refresh. Under the lid it's essentially a Washlet S5 — same remote with four user presets, instantaneous heating, EWATER+, PREMIST, night light, dryer, and deodorizer — sold through Home Depot and Amazon at a lower street price (about $500 vs the S5's $650). The trade-off is choice: elongated bowls and Cotton White only. For most buyers it's the value play of TOTO's current range.

Approx. price

~$500

Best for Elongated-toilet owners who want the full S5 experience and would rather keep the ~$150 difference.

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Specifications

Water heating
Tankless (Instant Heat)
Controls
Wireless Remote
Toilet fit
Elongated only
Power
Needs GFCI outlet within 4 ft
Spray pressure
5 pressure levels
Nozzle
Self-cleaning EWATER+ wand
Install
30-45 min DIY
Warranty
1-year limited

Features

  • Warm wateryes
  • Heated seatyes
  • Warm air dryeryes
  • Wireless remoteyes
  • Night lightyes
  • Deodorizeryes
  • Self-cleaning nozzleyes
  • Feminine washyes
  • S5 Features for Less
  • Endless Warm Water
  • 4 User Presets

What owners like

  • +Feature-for-feature an S5 twin — same remote with four presets, EWATER+, PREMIST, night light, dryer, and deodorizer — at $500 versus the S5's ~$650, making it the best value in TOTO's 2026 lineup
  • +Replaces the K300, which was selling above $850 as stock dried up — the KS6 launched cheaper than its predecessor ever sold
  • +Home Depot distribution means local stock, easy returns, and price matching — no bidet-specialist shipping wait
  • +PREMIST plus EWATER+ maintain both bowl and wand automatically — HD reviewers report visibly less bowl scrubbing within the first week
  • +Home Depot reviewers repeatedly single out the smooth install: docking bracket, metal tee, and hose fit standard US toilets in about 30 minutes

Common complaints

  • −Elongated only — round-bowl owners are pushed to the S2 or S5, and TOTO's fit guide is strict: measure the ~18.5-inch bolt-to-rim length before ordering
  • −As a channel-exclusive SKU it gets thin coverage from bidet review sites — there's far less owner troubleshooting lore online than for the S5
  • −One-year warranty, and TOTO parts are famously dear once it lapses — a replacement remote alone runs about $100
  • −Same gentle TOTO dryer as every other Washlet: adjustable to 140°F but low airflow, so fully air-drying takes a couple of minutes
  • −The 1,278-watt instant heater needs its own GFCI within reach of the 3.93-ft cord
  • −No auto open/close lid or auto-flush hooks at this price — TOTO reserves those for the S7A at roughly 2.5x the cost

Questions buyers ask

How is the KS6 different from the Washlet S5?

Under the lid it's essentially an S5 twin — same remote with four user presets, instant heating, EWATER+, PREMIST, night light, dryer, and deodorizer — sold as a Home Depot exclusive for about $150 less. The real differences are distribution and fit: the KS6 comes in elongated only.

Can I put the KS6 on a round toilet?

No — it's elongated only, and TOTO's fit guide is strict. Measure the bolt-to-rim length before ordering; you want roughly 18.5 inches. Round-bowl owners get pushed to the S2 or S5, both of which sell round versions.

How hard is the install?

Home Depot reviewers repeatedly single out how smooth it is: the docking bracket, metal tee, and hose fit standard US toilets in about 30 minutes with a wrench and screwdriver. The seat also slides off its bracket afterward for deep cleaning. You do need a GFCI outlet within reach of the 3.93-foot cord for the 1,278-watt heater.

What happens when the 1-year warranty runs out?

You're on your own with famously expensive TOTO parts — a replacement remote alone runs about $100. The consolation is that the platform is shared with the S5, so parts and troubleshooting knowledge are plentiful even though the KS6 itself gets thin coverage from bidet review sites.

Does the KS6 auto-open or auto-flush?

No — TOTO reserves the motorized lid and auto-flush hooks for the S7A at roughly 2.5x the price. The KS6's luxury cues are the softer kind: night light, deodorizer, PREMIST bowl misting, and the four-preset remote.

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